{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S1607-IQR50-A0T","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S1607-IQR50-A0T","canonicalUrl":"https://icboms.com/texas-instruments/LM3S1607-IQR50-A0T","factsUrl":"https://icboms.com/api/mcp/products/LM3S1607-IQR50-A0T","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris® ARM® Cortex®-M3S 1000 series MCU, LM3S1607-IQR50-A0T, 50 MHz, 128 KB flash, 32 KB RAM, 64-LQFP, -40 to 85°C.","salesMarkdown":"## 50 MHz Cortex-M3 with 128 KB flash — what the memory map means for your firmware The LM3S1607-IQR50-A0T is a Stellaris-series ARM Cortex-M3 MCU from Texas Instruments, clocked at 50 MHz with a single 32-bit core. The 128 KB on-chip flash (128K x 8) and 32 KB SRAM (32K x 8) define the application ceiling — a bare-metal control loop with a moderate RTOS footprint typically leaves 60-70 KB of flash and 15-20 KB of RAM for the application stack after the HAL and scheduler. ## NRND — sourcing reality for a part no longer recommended for new designs Texas Instruments lists the LM3S1607-IQR50-A0T as NRND (Not Recommended for New Designs). This means the part is still available for existing production BOMs but is not qualified for new design starts — the factory will eventually issue an EOL notice with a last-time-buy window. For a production line that already carries this order code, the NRND status is a flag to evaluate a migration path. ## Industrial temp grade and peripheral set — where it fits in a control board The 2.25 V to 2.75 V supply rail means the MCU runs from a 2.5 V rail; the internal oscillator eliminates an external crystal for the core clock. The 8-channel 10-bit ADC samples analog feedback (thermistor, potentiometer, current-sense) without an external converter. On-chip peripherals include brown-out detect, POR, a watchdog timer, PWM outputs, and a DMA controller — the DMA offloads the Cortex-M3 core during high-rate data transfers (e.g., SPI to an external DAC or UART to a display), keeping the CPU free for the control loop.","metaTitle":"TI LM3S1607-IQR50-A0T Cortex-M3 MCU, 50 MHz, 128 KB Flash","metaDescription":"Texas Instruments LM3S1607-IQR50-A0T Stellaris ARM Cortex-M3 MCU, 50 MHz, 128 KB flash, 32 KB RAM, 64-LQFP. NRND status — sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"NRND","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Mfr":"Texas Instruments","Speed":"50MHz","Series":"Stellaris® ARM® Cortex®-M3S 1000","Package":"Tape & Reel (TR)","RAM Size":"32K x 8","Core Size":"32-Bit Single-Core","EEPROM Size":"-","Peripherals":"Brown-out Detect/Reset, DMA, POR, PWM, WDT","Connectivity":"I²C, IrDA, Microwire, SPI, SSI, UART/USART","Mounting Type":"Surface Mount","Number of I/O":"33","Core Processor":"ARM® Cortex®-M3","Package / Case":"64-LQFP","Product Status":"Not For New Designs","Data Converters":"A/D 8x10b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"LM3S1607","Program Memory Size":"128KB (128K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C~85°C(TA)","Supplier Device Package":"64-LQFP (10x10)","Voltage - Supply (Vcc/Vdd)":"2.25V ~ 2.75V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$21.9991","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/e3ef443623982c6e3b8eabf8399f79e2.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM3S1607-IQR50-A0T/alternatives.json"},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to LM3S1607-IQR50-A0T?","answer":"The LM3S1607 belongs to the Stellaris ARM Cortex-M3S 1000 series; a migration to a newer Stellaris or Tiva-C family member would require a board layout change due to different package and pinout."},{"question":"What compliance documentation does Texas Instruments provide for LM3S1607-IQR50-A0T?","answer":"Texas Instruments provides RoHS and REACH compliance declarations for this part. The 64-LQFP package is lead-free and meets the current RoHS exemption thresholds. No UL or IEC certification is listed for this MCU — those standards apply to the end-equipment, not the semiconductor device itself."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S1607-IQR50-A0T","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM3S1607-IQR50-A0T when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-21T02:42:38.974Z","lastPublished":"2026-07-21T02:42:38.974Z","indexable":true}}